Rails generate standard textarea tag, but Safari/Chrome (Webkit) display all (not only Rails :) textareas as resizable.

Its apperance may be disabled by CSS

    textarea {
        resize: none;
        }

Or, if need only vertical resize:

    textarea {
         resize: vertical;
         }

Set `max-width` to make them only vertically resizable, or set `max-height` and `max-width` to stop all resizing.

However, be aware that breaking user expectations about how their browser treats controls tends to create a lot of user frustration.

you can set the column and rows like

    &lt;%= text_area :object, :attribute, :rows =&gt; &#39;10&#39;, :cols =&gt; &#39;100&#39; %&gt; 
    #=&gt; &lt;textarea cols=&quot;100&quot; rows=&quot;10&quot; id=&quot;object_attribute&quot; name=&quot;object[attribute]&quot;&gt;
    #      #{@object.attribute}
    #   &lt;/textarea&gt;

or specify the size like

    &lt;%= text_area :object, :attribute, :size =&gt; &quot;10x100&quot; %&gt; 
    #=&gt; &lt;textarea cols=&quot;10&quot; rows=&quot;100&quot; id=&quot;object_attribute&quot; name=&quot;object[attribute]&quot;&gt;
    #      #{@object.attribute}
    #   &lt;/textarea&gt;


my scripts rely heavily on external programs and scripts.
I need to be sure that a program I need to call exists. 
Manually, I&#39;d check this using &#39;which&#39; in the commandline.

Is there an equivalent to `File.exists?` for things in `$PATH`?

(yes I guess I could parse `%x[which scriptINeedToRun]` but that&#39;s not super elegant.

Thanks!
yannick

---

UPDATE: Here&#39;s the solution I retained:

   

     def command?(command)
           system(&quot;which #{ command} &gt; /dev/null 2&gt;&amp;1&quot;)
     end


--- 

### UPDATE 2: A few new answers have come in - at least some of these offer better solutions. 

### Update 3: The [ptools gem][1] has adds a &quot;which&quot; method to the File class. 


  [1]: https://github.com/djberg96/ptools

&quot;which in ruby&quot;: Checking if program exists in $PATH from ruby

Inside an OnClickListener I cannot access most variables &quot;outside&quot; of the scope, like this:

    findViewById(R.id.Button01).setOnClickListener(new OnClickListener()
            {
            	@Override
    			public void onClick(View v)
    			{
            		Intent mainApps = new Intent(Intent.ACTION_MAIN);
            		mainApps.addCategory(Intent.CATEGORY_LAUNCHER);
            		List&lt;ActivityInfo&gt; activities = this.getPackageManager().queryIntentActivities(mainApps, 0);
            		/*
            		Intent intent = new Intent(&quot;com.sygic.drive/com.sygic/drive/.SygicDriveActivity&quot;);
                	startActivity(intent);*/
    			}
            	
            });

in this example I need to get the PacketManager, and I cannot get it since I do not have the Context available inside the OnClickListener. 

I could make a static reference outside, and use it inside, but is that correct? Seems odd to have to do that all the time?


Inside OnClickListener I cannot access a lot of things - how to approach?

By default, Chrome makes my textareas resizable. I wish to control this and either make them only vertically resizable, or not at all. 

How can I achieve this ?

Chrome : make non resizable textareas

<p>By default, Chrome makes my textareas resizable. I wish to control this and either make them only vertically resizable, or not at all.</p>
<p>How can I achieve this ?</p>


I&#39;m using a listener in the background page to know when a tab is loaded:

&lt;!-- language: lang-js --&gt;

    chrome.tabs.onUpdated.addListener(function (tabId) { })

But the listener is fired twice: when the page has started loading, and when the page has finished.Is there a way to differentiate the two cases?

Chrome extensions : How to know when a tab has finished loading, from the background page

I&#39;m currently creating an extension for google chrome which can save all images or links to images on the harddrive.

The problem is I don&#39;t know how to save file on disk with JS or with Google Chrome Extension API.

Have you got an idea ?

Chrome extension: How to save a file on disk

I am looking for an equivalent in Chrome to the &quot;break on all errors&quot; functionality of Firebug. In the Scripts tab, Chrome has a &quot;pause on all exceptions&quot;, but this is not quite the same as breaking on all errors.

For instance, when loading a page with the following code, I would like Chrome to break on the line `foo.bar = 42`. Instead, even when enabling the &quot;Pause on all exceptions&quot;, I don&#39;t get the expected result.

    &lt;!DOCTYPE html PUBLIC &quot;-//W3C//DTD XHTML 1.0 Strict//EN&quot;
            &quot;http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd&quot;&gt;
    &lt;html xmlns=&quot;http://www.w3.org/1999/xhtml&quot; xml:lang=&quot;en&quot; lang=&quot;en&quot;&gt;
        &lt;head&gt;
            &lt;script type=&quot;text/javascript&quot;&gt;
            
                function doError() {
                    foo.bar = 42;
                }
            
                window.onload = function() {
                    try {
                        doError();
                    } catch (e) {
                        console.log(&quot;Error&quot;, e);
                    }
                }
            &lt;/script&gt;
        &lt;/head&gt;
        &lt;body&gt;
        &lt;/body&gt;
    &lt;/html&gt;

You can try the code pasted above on [this page][1] or using this [jsFiddle][2].


  [1]: http://dl.dropbox.com/u/6900/try/ee-chrome-errors.html
  [2]: http://jsfiddle.net/avernet/KvjNB/

JavaScript: Is there a way to get Chrome to break on all errors?

As some of you may know, Google Chrome has put some severe limitation on Greasemonkey scripts.

&gt; Chromium does not support `@require`, `@resource`, `unsafeWindow`, `GM_registerMenuCommand`, `GM_setValue`, or `GM_getValue`.

Without require, I can&#39;t find a way to include the jQuery library in Greasemonkey script under Google Chrome. 

Does anybody have some advice in this matter? 

How can I use jQuery in Greasemonkey scripts in Google Chrome?

I&#39;m not sure in which languages those extensions are, I think the are written in Html, Javascript or JSON. As far as I know they are &quot;compressed&quot; in a .CRX file.

It is possible to directly modify the html, js, json of a Chrome Extension (or whatever language they use)?

How do I directly modify a Google Chrome Extension File? (.CRX)

I have a simple [text area][1] in a form like this:

    &lt;textarea style=&quot;width:350px; height:80px;&quot; cols=&quot;42&quot; rows=&quot;5&quot; name=&quot;sitelink&quot;&gt;
        &lt;?php if($siteLink_val) echo $siteLink_val; ?&gt; 
    &lt;/textarea&gt;

I keep getting extra white space in this **textarea**. When I tab into it my cursor is like in the middle of the **textarea** and not in the beginning? What is the explanation?

  [1]: http://www.w3schools.com/TAGS/tag_textarea.asp



Why is textarea filled with mysterious white spaces?

I got a rails app where I can input a few paragraphs of text into my model.  The problem is I dont know how to input any line breaks.

I&#39;ve tried to add &quot; {ln}{/ln} ;  {&amp;nbsp}  and {br}{/br}&quot;  but that only displays the html as text and no break.

Is there anyway I can set it so the text area control will use any of the html I place within the model entry?

Is there any thing I can type so rails will recognize, hey put a line here?



Rails -- Add a line break into a text area

By default tab symbol in textarea equals to the width of 8 spaces. Is it possible to change this value to 4 for example? 

I am mostly interested in using this in Chrome browser.

Is it possible to change width of tab symbol in textarea?

I&#39;m trying to eliminate the extra bottom margin that both FF and Chrome seem to give to Textareas. Surprisingly IE seems to do it correctly. I would like to avoid using conditional includes but CSS3 tweaks are OK.

**Sample Code**

&lt;!-- begin snippet: js hide: false --&gt;

&lt;!-- language: lang-css --&gt;

    .red-box {
        background-color: red;
        overflow: hidden;
    }
    textarea {
        border: solid 1px #ddd;
        margin: 0px; /* Has no effect */
    }

&lt;!-- language: lang-html --&gt;

    &lt;div class=&quot;red-box&quot;&gt;
        &lt;textarea&gt;No Margin Please!&lt;/textarea&gt;
    &lt;/div&gt;


&lt;!-- end snippet --&gt;



How do I fix inconsistent Textarea bottom margin in Firefox and Chrome?

My textarea contains C# code, so i get red underlines all over the place, is there any way to disable auto correction on a TEXTAREA in html code?

Thank

HTML - How can i disable auto text correction in my TEXTAREA?

In Firefox **3**, I was able to write a custom confirmation popup with:

    window.onbeforeunload = function() {
       if (someCondition) {
          return &#39;Your stream will be turned off&#39;;
       }
    }

Now in Firefox **4**, it does not show my custom message. The default message that it provides is not even accurate to what my application does.

![firefox 4 confirm][1]

Can this default message be overridden?


  [1]: http://i.stack.imgur.com/4gaoU.png

Firefox 4 onBeforeUnload custom message

Since upgrading to Firefox 4.0, I&#39;ve noticed that I&#39;m occasionally getting an error in the console stating:

&gt;attempt to run compile-and-go script on a cleared scope

The only information I can find about this on the net currently is on the [mozilla groups forum](http://groups.google.com/group/mozilla.dev.platform/browse_thread/thread/10ff69b04b88e06f), where it is suggested that it&#39;s something to do with session restoring. In my case, though I haven&#39;t been able to reliably reproduce the error, it happens at any time, not just after a restore.

What&#39;s the deal? How do I stop the error?

Error: Attempt to run compile-and-go script on a cleared scope

When required is defined in a form field, Firefox 4 automatically shows a red border to this element, even BEFORE the user hits the submit button.

    &lt;input type=&quot;text&quot; name=&quot;example&quot; value=&quot;This is an example&quot; required /&gt;

I think this is disturbing for the user as he/she asn&#39;t made mistakes at the beginning.

I wnat to hide that red border for the initial state, but show it when the user hits the send button if there is a missing field marked as required.

I looked at `:required` and `:invalid` from new pseudo selector, but the changes are for **before AND after** the validation. (from [https://stackoverflow.com/questions/3809146/firefox-4-required-input-form-red-border-outline][1])

Is there a way to disable the red border before the user submits the form, and show it if there is some missing fields ?



  [1]: https://stackoverflow.com/questions/3809146/firefox-4-required-input-form-red-border-outline

Content Type	Original Author	Original Content on Stackoverflow
Question	glmxndr	View Question on Stackoverflow
Solution 1 - Google Chrome	ingeniarius	View Answer on Stackoverflow
Solution 2 - Google Chrome	jball	View Answer on Stackoverflow
Solution 3 - Google Chrome	nas	View Answer on Stackoverflow

Chrome : make non resizable textareas

Google Chrome Problem Overview

Google Chrome Solutions

Solution 1 - Google Chrome

Solution 2 - Google Chrome

Solution 3 - Google Chrome

Inside OnClickListener I cannot access a lot of things - how to approach?

"which in ruby": Checking if program exists in $PATH from ruby

Attributions